XmlValidatingReader.Schemas 속성

참조

정의

네임스페이스:: System.Xml

어셈블리:: System.Xml.ReaderWriter.dll

어셈블리:: System.Xml.dll

어셈블리:: netstandard.dll

중요

일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.

유효성 검사에 사용할 XmlSchemaCollection을 가져옵니다.

public:
 property System::Xml::Schema::XmlSchemaCollection ^ Schemas { System::Xml::Schema::XmlSchemaCollection ^ get(); };

public System.Xml.Schema.XmlSchemaCollection Schemas { get; }

member this.Schemas : System.Xml.Schema.XmlSchemaCollection

Public ReadOnly Property Schemas As XmlSchemaCollection

속성 값

XmlSchemaCollection

유효성 검사에 사용할 XmlSchemaCollection입니다.

예제

다음 예제에서는 XmlSchemaCollection에 저장된 스키마를 사용하여 세 개의 XML 파일의 유효성을 검사합니다.

#using <System.dll>
#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::Schema;

public ref class SchemaCollectionSample
{
private:
   XmlTextReader^ reader;
   XmlValidatingReader^ vreader;
   Boolean m_success;

public:
   SchemaCollectionSample()
   {
      reader = nullptr;
      vreader = nullptr;
      m_success = true;

      //Load the schema collection.
      XmlSchemaCollection^ xsc = gcnew XmlSchemaCollection;
      String^ schema = "books.xsd";
      String^ schema1 = "schema1.xdr";
      xsc->Add( "urn:bookstore-schema", schema ); //XSD schema
      xsc->Add( "urn:newbooks-schema", schema1 ); //XDR schema
      String^ doc1 = "booksSchema.xml";
      String^ doc2 = "booksSchemaFail.xml";
      String^ doc3 = "newbooks.xml";

      //Validate the files using schemas stored in the collection.
      Validate( doc1, xsc ); //Should pass.
      Validate( doc2, xsc ); //Should fail.   
      Validate( doc3, xsc ); //Should fail. 
   }


private:
   void Validate( String^ filename, XmlSchemaCollection^ xsc )
   {
      m_success = true;
      Console::WriteLine();
      Console::WriteLine( "Validating XML file {0}...", filename );
      reader = gcnew XmlTextReader( filename );

      //Create a validating reader.
      vreader = gcnew XmlValidatingReader( reader );

      //Validate using the schemas stored in the schema collection.
      vreader->Schemas->Add( xsc );

      //Set the validation event handler
      vreader->ValidationEventHandler += gcnew ValidationEventHandler( this, &SchemaCollectionSample::ValidationCallBack );

      //Read and validate the XML data.
      while ( vreader->Read() )
      {}

      Console::WriteLine( "Validation finished. Validation {0}", (m_success == true ? (String^)"successful" : "failed") );
      Console::WriteLine();

      //Close the reader.
      vreader->Close();
   }

   void ValidationCallBack( Object^ /*sender*/, ValidationEventArgs^ args )
   {
      m_success = false;
      Console::Write( "\r\n\tValidation error: {0}", args->Message );
   }

};

int main()
{
   gcnew SchemaCollectionSample;
}

using System;
using System.IO;
using System.Xml;
using System.Xml.Schema;

public class SchemaCollectionSample
{
  private const String doc1 = "booksSchema.xml";
  private const String doc2 = "booksSchemaFail.xml";
  private const String doc3 = "newbooks.xml";
  private const String schema = "books.xsd";
  private const String schema1 = "schema1.xdr";

  private XmlTextReader reader=null;
  private XmlValidatingReader vreader = null;
  private Boolean m_success = true;

  public SchemaCollectionSample ()
  {
    //Load the schema collection.
    XmlSchemaCollection xsc = new XmlSchemaCollection();
    xsc.Add("urn:bookstore-schema", schema);  //XSD schema
    xsc.Add("urn:newbooks-schema", schema1);  //XDR schema

    //Validate the files using schemas stored in the collection.
    Validate(doc1, xsc); //Should pass.
    Validate(doc2, xsc); //Should fail.
    Validate(doc3, xsc); //Should fail.
  }

  public static void Main ()
  {
      SchemaCollectionSample validation = new SchemaCollectionSample();
  }

  private void Validate(String filename, XmlSchemaCollection xsc)
  {

     m_success = true;
     Console.WriteLine();
     Console.WriteLine("Validating XML file {0}...", filename.ToString());
     reader = new XmlTextReader (filename);

     //Create a validating reader.
    vreader = new XmlValidatingReader (reader);

     //Validate using the schemas stored in the schema collection.
     vreader.Schemas.Add(xsc);

     //Set the validation event handler
     vreader.ValidationEventHandler += new ValidationEventHandler (ValidationCallBack);
     //Read and validate the XML data.
     while (vreader.Read()){}
     Console.WriteLine ("Validation finished. Validation {0}", (m_success==true ? "successful" : "failed"));
     Console.WriteLine();

     //Close the reader.
     vreader.Close();
  }

  private void ValidationCallBack (object sender, ValidationEventArgs args)
  {
     m_success = false;

     Console.Write("\r\n\tValidation error: " + args.Message);
  }
}

Option Strict
Option Explicit

Imports System.IO
Imports System.Xml
Imports System.Xml.Schema

Public Class SchemaCollectionSample
    Private doc1 As String = "booksSchema.xml"
    Private doc2 As String = "booksSchemaFail.xml"
    Private doc3 As String = "newbooks.xml"
    Private schema As String = "books.xsd"
    Private schema1 As String = "schema1.xdr"
    
    Private reader As XmlTextReader = Nothing
    Private vreader As XmlValidatingReader = Nothing
    Private m_success As Boolean = True
    
    Public Sub New()

            'Load the schema collection
            Dim xsc As New XmlSchemaCollection()
            xsc.Add("urn:bookstore-schema", schema) 'XSD schema
            xsc.Add("urn:newbooks-schema", schema1) 'XDR schema

            'Validate the files using schemas stored in the collection.
            Validate(doc1, xsc) 'Should pass.
            Validate(doc2, xsc) 'Should fail.   
            Validate(doc3, xsc) 'Should fail. 
        
    End Sub
    
    Public Shared Sub Main()
        Dim validation As New SchemaCollectionSample()
    End Sub
    
    Private Sub Validate(filename As String, xsc As XmlSchemaCollection)
        
            m_success = True
            Console.WriteLine()
            Console.WriteLine("Validating XML file {0}...", filename.ToString())
            reader = New XmlTextReader(filename)
            
            'Create a validating reader.
            vreader = New XmlValidatingReader(reader)
            
            'Use the schemas stored in the schema collection.
            vreader.Schemas.Add(xsc)
            
            'Set the validation event handler.
            AddHandler vreader.ValidationEventHandler, AddressOf ValidationCallBack
            'Read and validate the XML data.
            While vreader.Read()
            End While
            Console.WriteLine("Validation finished. Validation {0}", IIf(m_success, "successful", "failed"))
            Console.WriteLine()

            'Close the reader.
            vreader.Close()

    End Sub
       
    
    Private Sub ValidationCallBack(sender As Object, args As ValidationEventArgs)
        m_success = False
        
        Console.Write((ControlChars.CrLf & ControlChars.Tab & "Validation error: " & args.Message))
    End Sub
End Class

샘플에서는 다음 5개의 입력 파일을 사용합니다.

booksSchema.xml


<?xml version='1.0'?>
 <bookstore xmlns="urn:bookstore-schema">
   <book genre="autobiography">
     <title>The Autobiography of Benjamin Franklin</title>
     <author>
       <first-name>Benjamin</first-name>
       <last-name>Franklin</last-name>
     </author>
     <price>8.99</price>
   </book>
   <book genre="novel">
     <title>The Confidence Man</title>
     <author>
       <first-name>Herman</first-name>
       <last-name>Melville</last-name>
     </author>
     <price>11.99</price>
   </book>
 </bookstore>

booksSchemaFail.xml


<?xml version='1.0'?>
 <bookstore xmlns="urn:bookstore-schema">
   <book>
     <author>
       <first-name>Benjamin</first-name>
       <last-name>Franklin</last-name>
     </author>
   </book>
   <book genre="novel">
     <title>The Confidence Man</title>
     <author>
       <first-name>Herman</first-name>
       <last-name>Melville</last-name>
     </author>
     <price>11.99</price>
   </book>
   <book genre="philosophy">
     <title>The Gorgias</title>
     <author>
       <name>Plato</name>
     </author>
     <price>9.99</price>
   </book>
 </bookstore>

newbooks.xml


<?xml version='1.0'?>
<bookstore xmlns="urn:newbooks-schema">
  <book genre="novel" style="hardcover">
    <title>The Handmaid's Tale</title>
    <author>
      <first-name>Margaret</first-name>
      <last-name>Atwood</last-name>
    </author>
    <price>19.95</price>
  </book>
  <book genre="novel" style="other">
    <title>The Poisonwood Bible</title>
    <author>
      <first-name>Barbara</first-name>
      <last-name>Kingsolver</last-name>
    </author>
    <price>11.99</price>
  </book>
</bookstore>

books.xsd


<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     xmlns="urn:bookstore-schema"
     elementFormDefault="qualified"
     targetNamespace="urn:bookstore-schema">
 
  <xsd:element name="bookstore" type="bookstoreType"/>
 
  <xsd:complexType name="bookstoreType">
   <xsd:sequence maxOccurs="unbounded">
    <xsd:element name="book"  type="bookType"/>
   </xsd:sequence>
  </xsd:complexType>
 
  <xsd:complexType name="bookType">
   <xsd:sequence>
    <xsd:element name="title" type="xsd:string"/>
    <xsd:element name="author" type="authorName"/>
    <xsd:element name="price"  type="xsd:decimal"/>
   </xsd:sequence>
   <xsd:attribute name="genre" type="xsd:string"/>
  </xsd:complexType>
 
  <xsd:complexType name="authorName">
   <xsd:sequence>
    <xsd:element name="first-name"  type="xsd:string"/>
    <xsd:element name="last-name" type="xsd:string"/>
   </xsd:sequence>
  </xsd:complexType>
 
 </xsd:schema>

schema1.xdr


<?xml version="1.0"?>
<Schema xmlns="urn:schemas-microsoft-com:xml-data"
        xmlns:dt="urn:schemas-microsoft-com:datatypes">
  <ElementType name="first-name" content="textOnly"/>
  <ElementType name="last-name" content="textOnly"/>
  <ElementType name="name" content="textOnly"/>
  <ElementType name="price" content="textOnly" dt:type="fixed.14.4"/>
  <ElementType name="author" content="eltOnly" order="one">
    <group order="seq">
      <element type="name"/>
    </group>
    <group order="seq">
      <element type="first-name"/>
      <element type="last-name"/>
    </group>
  </ElementType>
  <ElementType name="title" content="textOnly"/>
  <AttributeType name="genre" dt:type="string"/>
  <AttributeType name="style" dt:type="enumeration"
        dt:values="paperback hardcover"/>
  <ElementType name="book" content="eltOnly">
    <attribute type="genre" required="yes"/>
    <attribute type="style" required="yes"/>
    <element type="title"/>
    <element type="author"/>
    <element type="price"/>
  </ElementType>
  <ElementType name="bookstore" content="eltOnly">
    <element type="book"/>
  </ElementType>
</Schema>

설명

참고

클래스는 XmlValidatingReader .NET Framework 2.0에서 사용되지 않습니다. 클래스 및 Create 메서드를 사용하여 유효성 XmlReader 검사 인스턴스를 XmlReaderSettings 만들 수 있습니다. 자세한 내용은 XmlReader 참조 페이지의 설명 섹션을 참조하세요.

미리 XmlSchemaCollection 로드된 XDR(XML-Data) 및 XSD(XML 스키마 정의 언어) 스키마를 보유합니다. 이 속성은 판독기에서 스키마 캐시에 액세스할 수 있도록 하며 매번 스키마를 다시 로드하지 않고도 유효성을 검사할 수 있습니다. 판독기는 .에 XmlSchemaCollection아무것도 추가하지 않습니다.

XmlSchemaCollection 다른 네임스페이스를 참조하는 요소가 포함된 XSD(XML 스키마)를 포함하는 include import 경우 이러한 다른 네임스페이스에 대한 스키마는 유효성 검사 목적으로만 로드됩니다. 이러한 스키마가 스키마 컬렉션에 명시적으로 추가되지 않는 한 컬렉션 메서드 또는 속성을 사용하여 액세스할 수 없습니다. 예를 들어 컬렉션에 스키마 파일에 대한 참조가 포함된 스키마 파일이 a.xsd``b.xsd포함된 경우 컬렉션 메서드 또는 속성을 사용하여 액세스하려면 먼저 스키마 컬렉션에 추가 b.xsd 해야 합니다.

XmlSchemaCollection 속성을 사용하여 Schemas 액세스하는 경우 메서드는 XmlSchemaCollection.Add 속성에서 지정한 XmlValidatingReader.XmlResolver 값을 XmlResolver 사용합니다.

참고

스키마는 첫 번째 Read 호출 전에 추가 XmlSchemaCollection 해야 합니다.

적용 대상

추가 정보

XmlReader

다음을 통해 공유

XmlValidatingReader.Schemas 속성

정의

속성 값

예제

설명

적용 대상

추가 정보

추가 리소스